GrantG

If you had a GT3 with these mods on your first day, would you be driving or typing?

Jbravo23

Agreed. I’m not one to follow break in either but I can’t help but make sure this clutch beds in properly. I did put on 50 miles this am. Probably another 100-150 tomorrow. So this won’t take too long : )

Where do I start? Let’s see

Lots of talk of 992 being too refined. I myself was somewhat in that camp after trading in heavily modded 991.2 for stock 992 touring. Dundon headers and exhaust helped with that. Now paired with this smfw and the car feels possessed upon start up. The chatter and vibrations really feel race car ish.

The clutch is heavy. Well heavier I should say. Feels more 997 GT3 than it does 991.2/992. Requires more effort which I enjoy. The description they gave for the s/t is it’s an old modern car and I have to agree. I think most of that has to do with the smfw, heavier clutch, less sound deadening and overall less weight.

I do have to recalibrate my brain when shifting gears. The revs drop insanely fast. Rev match works flawlessly but it’s almost not even needed anymore. You tap the throttle and the rpms go exactly where you need them to be. In that sense it feels like a different car that needs to be learned.

I measured 21.8lbs in total reduction. The dual mass flywheel itself is 25lbs. After holding the parts in hand, it’s incredible they removed that much weight from the drivetrain.

It’s too early but based on today I’m not sure I would want to do the shorter gearing. The s/t is going to be a riot and kudos to those who have one coming. It wouldn’t surprise me if some might think it’s too much. Props to anyone who daily’s that thing.

This mod already requires more driving effort, so adding shorter gears which means more shifting and less sound deadening for a louder cabin isn’t going to be for the faint of heart. It really will feel like an old school race car for the road. Which is interesting because it requires more effort to drive but then has a softer suspension. Porsche and their sorcery….

I feel it will be a more point A to point A type of car. Think carrera gt. Hate to think the amount of them that will sit. They should be driven hard and often!

With that said I f in love it. I’m glad I did it. The car feels special and I’m thankful to own one of these gems.

Thanks to Sharif and John over at Porsche Westwood for quick and easy install.

https://www.instagram.com/p/C3vuqIBJTjv/?igsh=MTgzeTd0dzAwaDY0OA==

GrantG

Excellent - Congrats! No concerns that the ECU seems like it could use some tweaking?

M3Inline6

This is awesome @Jbravo23 !!! What a killer work up! Well done!

Le Petit Garage

Awesome right up. I feel like the SMFW of the 997s made such a difference. Glad to see the 991/992 getting the same love.

Jbravo23

None!

RENNtorq

Thanks for the complete review and congratulations on the upgrade. The clutch/flywheel, along with the magnesiums, are probably the most significant differences between the two cars.

I'm glad you mentioned Sharif and John at Westwood - they are terrific to work with. They're experienced and knowledgeable, and are genuine P-Car enthusiasts.

jonbek

Your IG post is all the review I need. Hot darn.

Hadrien*

Thanks a lot for the feedback ! The day i saw the S/T i rushed to my dealer, almost got an allocation and then think back on the parts for 997 and how it could trickle down.
I refused the allocation proposed much later ( in France the road tax is 60k usd just for registration and buyers flee from purchase ) and told myself i prefere to keep my 3.8RS and get a 991.2 with such upgrades later on !

Best mod you can do on the 997 GT3's are 3.89 r&p and 4.0rs/3.8rs smfw, guess will be same for this 991.2/992 and maybe 992.2 platform.

tvasbn

S/T clutch having less fiction area was expected to require higher clamping not to slip.
If the S/T clutch is not heavier then GT3 maybe it has hase different master/slave cylinders with smaller bore diameter.

Tour the Ring

That's why it is a multi plate clutch setup to compensate for the friction surface loss by the reduced diameter - a multitude of discs are used. So in the end it results in a similar transmittable power/torque.
Master an slave are identical to the gt3/st

AbsolutelyNobody

I love this thread, thanks for sharing and going through with it. Please post more threads like this and less about values of cars.

GT3

Very happy this worked. I might have to look for a 992 Touring MT sooner than I thought 🫢

AdamSanta85

Now the aftermarket just needs to tackle the Ring & Pinion.

This is a common-ish mod for GT4 that doesn’t cost too much money. The transmission being out for a clutch replacement is the perfect time.

Are the GT3 6MT very different than the GT4 6MT?

PTS

This got me even more amped for the S/T. Thanks for sharing. Remember if hard for more than 4 hours, call your doctor